Boiler-compound-feeding apparatus.



F. G. GIBBS.

BOILER COMPOUND FEEDING APPARATUS.

APPLICATION FILED OOTIB, 1914.

1,120,047, Patented Dec. 8, 1914.

Wyn/ M M NTOR (5 44 TTORNE V.

FRANK C. GIBBS, OF DAVENPORT, IOWA.

BOILER-COMPOUND-FEEDING APPARATUS.

, Specification of Letters Patent.

PatentedDec. s, 1914..

Application filed October 1c, 1914: Serial No. 867,034.

. To all whom it ma concern:

Be it known t at I, FRANK C. GIBBS, a citizen. of the United States of America, residing at Davenport, in the county of Scott and State of Iowa, (whose post-ofiice address is Davenport, Iowa have invented a new and useful Boiler-CompoundFeeding A paratus,of which the following is a specification.

My invention relates to devices for feeding boiler-compound in solution into steam boilers, and the objects of my invention are: First, to provide means for mixing a predetermined quantity of boiler-compound with the feed'- water just before being fed into the boiler; second, to provide a sight glass or transparent section in the feeding tube by which the amount and color of the compound solution can be observed; third, to provide means for alternately ,drawing the boilercompound in solution into a transparent sight glass where it can be observed and for washing out the sight glass after expelling the compound therefrom so as to keep the sight glass clean and facilitate observation of its contents; fourth, to provide convenient means for readily regulating the quantity of compound to be fed at each stroke; fifth, to provide means to prevent the escape of the boiler-compound solution when the pump is idle; sixth, to provide means for mixing the boiler-compound thoroughly with water and forkeeping same thoroughly mixed. I attain these objects by means of the apparatus illustrated in the accompanying drawings in whicha.

Figure I is a side elevation of my preferred form of apparatus. Fig. II is a cross section detail of the check valve C and Fig. IIIhi a side view of the check valve b but wit the interior construction.

Similar characters refer to similar parts A supply tank e,.is secured in position a suitable distance above the feed pump h. The supply -tank is provided with an 1n rt of the casing broken away to ,showtake pipe 12, and a funnel for the insertion of the boiler-compoundeither in dry, liquid or other form as ma be desired, andthe intake pipe, p, is provided with a valve of the ordinary hand wheel type to close same.

,' An intake pipe, 7, connecting with the feed water heater may be secured to the tank, e, to equalize the pressure on the supply tank, e, and the intake, An ordinary nd valve closes same when necessary. 'A steam pipe, g, is led into one end of the supply tank near the bottom thereof and under the filler pipe and is provided with a valve 0, by which same may be closed or the admission of steam regulated. A glass gage, g, is suitably secured to the supply tank in a vertical position, both ends opening into the supply tank so that the level of the solution .anld its strength may be observed in the glass tu e. a Y

A pipe line, j, extends from the supply tank, e, to one end of the pump, h, and (has suitably connected therewith a section of glass tubing or sight glass, a, suitably secured in and as a part of the pipe line. The

adjoining sections of'the pipe line are held in position by a yoke, n.. This sight glass, a, may be mounted in any desired manner but my preferred form is to mount same with a stuffing box at each end and secured by sleeves threaded to fit into the metallic portion of the pipe line and provided with nuts, m, by which same can be tightened or loosened.

A check valve, b, is secured in the pipe line between the tank, 6, and the sight tube or age, a, to prevent the fluid from flowing bac ward into the stock tank, a; A hand valve, 1, is mounted in the lower end of the pipe line, 9', where same connects with the pump- A regulating valve, d, is mounted in the pipe line between the stock tank, 6, and the unction of its branches. Any suitable form of valve may be used but I have shown the ordinary plug cock which may be opened or closed by turning the handle. This valve regulates the flow of thefiuid from the stock tank into the sight tube or gage, a, and may be adjusted so that a single stroke of the pump will draw just enough boiler-compound out of the stock tank to fillthe sight tube half full or full,

or any other quantity as desired.

At the upper end of the pipe line, j, a check valve, 0, is mounted connecting with ordinary swing check type, consisting of a seat, to, and a valve, t, pivoted at its upper end, and I have shown'the check valve, 0, as the ordinary gravity check consisting of a seat, s, and valve, 1, secured in place by a central stem extendin on each side of the valve and working in suitable openings formed in the casing. It is obviousthat any other suitable form of check desired may be used with this apparatus and I make no special claim upon any particular form of valve.

In the operation of my apparatus, the supply tank, e, is-filled with water to the desired height. The boiler-compound is then introduced through the funnel and intake pipe p, either in solution or in original form, and is thoroughly mixed with the water in the stock tank, e, by steam admitted through the valve 0. The valve, d, is then opened to the desired extent and per mits the boiler-compound solution to go into the pipe ,linef'j, with each alternate impulse of the pump b. When the piston is drawn away from the end of the cylinder to which the valve Z, connects, the suction draws water from the pipe line, 7', into the cylinder of the pump and causes the solution to flow from the stock tank into the pipe line. "The cylinder at the same time is receiving water from the intake pipe 11.

The proportion of water received from the intake pipe, 21, and from the pipe line, 7',

is determined by their relative sizes and;

the extent to-which the valve, d, is o ened. I prefer to have the valve d, opene sufliciently to permit enough solution to be drawn from the tank to fill the upper half of the sight tube or gage, a, at each impulse. The solution can then be observed in the sight tube without coloring the whole tube.

At the return stroke of the ump, a part of the water in the cylinder 0 the pump is forced into the pipe line, 9', through the valve, 0, closing the check valve 6, and forcing the solution from the sight tube, a, with an added quantity of water through the valve 0, and through the feed line 10, into the intake pipe 11, where it is with the feed water before going into the;b0ile'r.

' The pressure upon the solution in th stock tank e, and pipe lineyj, ancl the'water in intake, 2', is very small relatively to the ressureof-the pump uponthe return stro of :the piston whichforces-'thewaterdnto the boiler as Well as forces water into the pipe line 7',- so that a much larger quantity of water is forced into the pipe line, 7', than is drawn from the stock tank solution, thus thoroughly washing out the sight tube a,

boiler without departing from the spirit of my invention, but I prefer to have it connected with the intake pipe so as to more thoroughly mix the boiler-compound solution with the water.

It will be observed that my apparatus provides a positive feed without mechanical moving parts other than the check valves and feed-water pump.

What I claim is:

1. In combination with a boiler feedwater pump, a suitable tank, a pipe line extending from the tank and having. two branches one of which connects with the pump cylinder and the other with the pump intake, a check valve in the pipe line before connecting with the intake betweenthe intake and the junction of the two branches.

2, The combination with a-boiler feedwater ump, of a suitable tank, a pipeline, extendlng from the tank and having two branches one of which connects with the pump cylinder and the other with the pump intake, a' check valve in the pipe line between the tank and the junction point of the two branches, a check valve in the branch connecting with the intake between the intake and the junction point of the two branches, and a regulating valve mounted in the pipe line between the tank and the junction point of the two branches.

3. The combination with a boiler feed water" pump, of a suitable tank,-a pipe line extending from the tank and having two branches one of which connects with' the pump cylinder and *the other with the pump intake, a check valve in the pipe line between the tank and the junction of the two branches, a check valve in the branch connecting with the intake betweenthe intake and the junction point of the two branches,

asight glass inserted in 'and forming a sec- .1

tion of the branch extendin 4. The combination wit tothe um a boi er eed v water pump, of a suitable tank, a pipe line with the intake between N H the intake and the junction point of the two "branchesp'a sight-glass mounted .in and forming a section of the branch line extending to the pump, and a suitable yoke to secure the portions of the pipe line adjacent to the sight tube in position.

5. In a boiler-compound feeding apparatus, the combination with a suitable supply tank, of a pipe line connecting the tank with a pump and containing a sight glass, and means for alternately drawing a portion of the solution from the tank into the-sight class and washing it out.

- 6. In a boiler-compound feeding apparatus, the combination with a feed-water pump, of a supply tank suitably secured above the level of the pump, a branched pipe line connecting Withthe lower part of the tank and having one branch extending to the pump and the other branch having a double bend extending above the level of the tank and a section extending from the bend to the pump intake.

7. In a boiler-compound feeding apparatus, the combination with a feed-water pump, of a supply tank suitably secured above the level of the pum a branched pipe line connecting with the ibwer part of the tank and having one branch extending to the pump) and the other branch havin a double nd extending above the level o the tank and extending from the bend to the pump intake, and a regulating valve mounted in the pipe line between the tank and the junction of the branches.

8. In a boiler-compound feeding apparatus, the combination with a feed water pump, of a supply tank suitably secured above the level of the pump, a branched pipe line connecting with the lower part of the tank and having one branch extending to the pump and the other branch having a double bend extending above the level of the tank and extending from the bend to the pump intake, and a check valve mounted in the pipe line between the tank and the junction of the branches.

9. In a boiler-compound feeding apparatus, the combination with a feed water pump, of a supply tank suitably secured above the level of the pump, a branched its entrance into the pump intake and thejunction of the branches.

10. In a boiler-compound feeding appa-- ratus, the combination with a feed water pump, of a supply tank suitably secured above the level of the pump, a branched pipe line connecting with the lower part of the tank and having one branch extending to the pump and the other branch having a double bend extending above the level'of the tank, a section extending from the bend to the pump intake, a check valve mounted in the pipe line between the tank and the junction of the branches, a check valve in the branch between the double bend and the junction of the branches, and a regulating valve suitably seeured in the pipe line between the tank and the junction of the branches.

11. In combination with a boiler feedwater pump, a suitable tank having a glass gage suitably secured thereto, a pipe line extending from the tank and havin two branches one of which connects wit the pump cylinder and the other with the pump intake, a check valve in the pi e line before it branches, and a check valve in the branch connecting with the intake between the intake and the junction of the two branches.

12. In a boiler-compound feeding apparatus, the combination with a suitable supply tank havin a glass gage suitably secured thereto, 0 a pipe line connecting the tank with a pump and containin a sight glass, and means or alternatel awing a portion of the solution from t e tank mto the sight glass and washing it out.

FRANK C. GIBBS. Witnesses:

Wmnnumn James, Amm W. HAMANN. 

